Role of Polymer Fractionation in Energetic Losses and Charge Carrier Lifetimes of Polymer: Fullerene Solar Cells

Baran D, Vezie MS, Gasparini N, Deledalle F, Yao J, Schroeder BC, Bronstein H, Ameri T, Kirchartz T, Mcculloch I, Nelson J, Brabec C (2015)

Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2015

Journal

Journal of Physical Chemistry C American Chemical Society

Book Volume: 119

Pages Range: 19668-19673

Journal Issue: 34

DOI: 10.1021/acs.jpcc.5b05709

Abstract

Nonradiative recombination reduces the open-circuit voltage relative to its theoretical limit and leads to reduced luminescence emission at a given excitation. Therefore, it is possible to correlate changes in luminescence emission with changes in open-circuit voltage and in the charge carrier lifetime. Here we use luminescence studies combined with transient photovoltage and differential charging analyses to study the effect of polymer fractionation in indacenoedithiophene-co-benzothiadiazole (IDTBT):fullerene solar cells. In this system, polymer fractionation increases electroluminescence emission at the same injection current and reduces nonradiative recombination. High-molecular-weight and fractionated IDTBT polymers exhibit higher carrier lifetime-mobility product compared to that of their nonfractionated analogues, resulting in improved solar cell performance. (Graph Presented).

Authors with CRIS profile

Derya Baran Institute Materials for Electronics and Energy Technology (i-MEET) Nicola Gasparini Institute Materials for Electronics and Energy Technology (i-MEET) Tayebeh Ameri Institute Materials for Electronics and Energy Technology (i-MEET) Christoph Brabec Institute Materials for Electronics and Energy Technology (i-MEET)

Involved external institutions

Imperial College London / The Imperial College of Science, Technology and Medicine GB United Kingdom (GB) Forschungszentrum Jülich / Research Centre Jülich (FZJ) DE Germany (DE)

How to cite

APA:

Baran, D., Vezie, M.S., Gasparini, N., Deledalle, F., Yao, J., Schroeder, B.C.,... Brabec, C. (2015). Role of Polymer Fractionation in Energetic Losses and Charge Carrier Lifetimes of Polymer: Fullerene Solar Cells. Journal of Physical Chemistry C, 119(34), 19668-19673. https://dx.doi.org/10.1021/acs.jpcc.5b05709

MLA:

Baran, Derya, et al. "Role of Polymer Fractionation in Energetic Losses and Charge Carrier Lifetimes of Polymer: Fullerene Solar Cells." Journal of Physical Chemistry C 119.34 (2015): 19668-19673.

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